I think this should be the calculation:-
IDV - 4,48,480/-
Rate - 3.283%
Basic OD - 14724/-
Less discount (20%) - 2945/-
Net OD prem. - 11779/-
Basic TP - 800/-
O.D. - P.A. - 100/-
L.L. to driver - 25/-
Net TP - 925/-
Basic total 12704/-
S.T. 1570/-
Net payable -
14274/- 